Gasboy CFN Site Controller - Manual (Page 42)

34 Gilbarco Interface Unit Pump Interface Manual v1.3
Gasboy CFN Series 03/20/03
Site Controller to Interface RS-422/485 wiring
The cable to the current loop interface RS-422/485 connection is a modular handset connector
cross cable assembly with the transmit and receive pairs reversed, Gasboy part number C04500.
The connections are:
This cable runs from a RS-422/485 protection box to the interface unit. The RS-422/485
from the protection box to the Site Controller should be in loop 1 (CFNII and III) or PCU/RT
(CFN1) port. This pinout is symmetrical, so it does not matter which pin you count as pin 1, so
long as you use the same corresponding pin at both ends. Also, the cable is symmetrical from end
to end, so it does not matter which end you plug into the interface unit.
System Layout
All wiring/installation of Gilbarco pumps and dispensers to the distribution box should follow
Gilbarco installation instructions. For more detailed information on installing an electronic
interface to Gilbarco dispensers, refer to the Current Loop Interface Manual, part no. C01745.
Below is the system layout for the Gilbarco interface and a SCII w/ CRIND.
Below is the system layout for the Gilbarco interface and a SCII w/o CRIND.
Note: this will not work with interface version 2.0 and above.
Junction Box Pin Current Loop Interface Pin
1 (Rx+) 3 (TX+)
2 (Rx-) 4 (TX-)
3 (TX+) 1 (Rx-)
4 (Tx-) 2 (Rx-)
Site Controller II
Current Loop
Interface Box
C05688
RS422/485
cable C05670
to 422/485 Loop 2
RS422/
J-Box
Gilbarco 422/485 Cable
C04500
CRIND
Gilbarco
Dist Box
(from Gilbarco)
Dist Box
(from Gilbarco)
Current
Loop 1
Cable C06691
Assembly C06326
CRINDS
1-16
PUMPS
1-16
Current
Loop 2
485
Site Controller II
Current Loop
Interface Box
C05688
Loop 1
Gilbarco 422/485 Cable
C04500
Gilbarco
Gilbarco
Dist Box
(from Gilbarco)
Dist Box
(from Gilbarco)
Current
Loop 2
Cable C06691
PUMPS
1-16
PUMPS
17-32
Current
Loop 1
RS422/485
cable C05670
RS422/
J-Box
485